Oil-well strainer.



0. HARDIN & v. B. DANIELS.

OIL WELL STRAINER. APPLICATION FILED MM. 14. 19:6.

Patented Oct. 24

OTIS HARDIN, OF HUMBLE,

AND VEERIN B. DANIELS, OF SOURLAKE, TEX;AS.

OIL-WELL strnamnia.

Sourlake, in the counties of Harris and Harding and State of Texas, have invented certain new and useful Improvements in ()il-Well Strainers, of which is a specification.

This invention relates to strainers for 01].

the following A and other deep wells and has'for its object with parts broken away'and in section show-' the provision of a novel construction where by the inlet surface Wlll be lncreased; also to provide means whereby the -straining member will be protected agalnst injury, and also to provide the several parts will be held in place. The invention is illustrated in the accompanying drawings and will be hereinafter fully described, the novel features being pointed out-in the claims following the detailed description.

In the drawings; Figure 1 is ,an elevation 1ng our lIIlPI'OVBd strainer applied to an oil well casing; Fig, '2 is a horizontal section- ,on the line 2.-2 of Fig. 1 Fig. 3 is a detail longitudinal section; Fig. 4 is a view similar to Fig. 3 showing a difi'erent form of strainer wrapping;

' y In the accompanying drawings, 1 indithereinto. The

cates the well casing or pipe which is of any desired diameter and is provided at its ends with threaded portions 2 and 3 adapted to be engaged by couplings 4 and 5 whereby i't-is connected with the main pipe-and with the driving point. Between the threaded extremities longitudinal grooves Gare formed in the outer surfaceof the casing and at intervals along the said grooves transverse openings 7; are

which extends approximately the full length of the casing and maybe of a semicircular form, as shown in. Fig 3,; or -1nay=- be V- shaped as shown at *8 .in Fig.4. The strainer body consists" of wrapped around'thecas the groove, section, and a Fig. 4: showing a triangular cross-section at v ping aresecured to the casing-in any de- Specification of Letters Patent.

admit the oil or novel means whereby jacket strainer provides formed-through the wall of the casing so as to admit the liquid external surface of the'casing is also providedwith a spiral groove 8 .i

9. The ends of thi wrap- Patented net. at, rain.

Application filed March 14, 1916. Serial in. 84,122.

sired practical manner so ration of the end spiral of the wrapping out of contact so that an ample entrance space will be provided to other liquid into the well casing. at protecting jacket 10 is fitted as to prevent sepa- ,around the casing and the wrapping so as to .lie close against the strainer wrapping protect it from injury through contact with projecting stones or other substances. This jacket 10 is to fit against the beveled exterior surfaces s from the casing; and the groove, will hold the adjacent coils and thereby hold it firmly in place and also 1 of the casing 1, as shown at 13, and are riv-' eted ends as to or otherwise secured to the casing. The

bear upon the tapered ends of the jacket and thereby firmly clamp the same to the casing when the couplings are turned home.

, If so desired, the openings in the may be in the form of slots, as shown at 147, instead ofcircular openings 11 and the slots will obviously provide a greater clearance for the liquid so as to prevent choking.

It will be readily noted that our improved a construction whereby the strands of the strainer wrapping will eheld rigidly and evenly in their proper places and the wrapped surface of the pipe through. out the strainer. The ends of the jacket may e swaged or otherwise'drawn down to the smooth beveled surface of the casing and will be perfectly smooth and even will, of course, lie close-to the threaded extremities of the casing so that, when the coupling is turned home, the flared end thereof Wlll pass around and over the adjacent end of the acket and positively protectthe same, the. acket protecting the entire strainer nwrapping ag inst bein'gscraped ofi, bruised, a--} wire'- 9 which is ng. andseated in,

the said spiraI'groove and of-fafcross se tion'al form corresponding to theshapeof' Fig. 3 showing a'circular cros'sor otherwise damaged, as now frequently ha pens with the. ordinary strainer.

the purposes for which it is-designed.

of the couplings t and 5 arefiared so The 'jac et'also- -fits snugly against the strainer Having thus described the invention, what is claimed as new is:

1. The combination of a well casing having inlet openings therethrough and having outwardly beveled portions near its ends,

2. The combination of a well casing havwith spaced spiral grooves extending across the longitudinal grooves and the said inlet openings, a spiral strainer wrapping coiled about the casing and having its separate coils embedded in the said spiral grooves, the casing having external outwardly beveled portions adjacent the ends of the wrapping, a jacket fitted closely over the said wrapping and having its ends tapered and secured upon the beveled portions of the easing beyond the ends of the wrapping, and couplings fitted on the ends of the casing and having flared ends bearing upon the tapered ends of the jacket, said jacket being provided with inlet openings.

In testimony whereof weaflix our signatures.

OTIS HARDIN.

L. S- VEERIN B. DANIELS. [n 5. 

